My personal recommendation is, if you're not really going to be gaming, go with the cheapy.

Apart from World of Warcraft, being the only modern game I play, I could run my entire system on the onboard S3 chipset that's like from the dawn of 3d cards, without issues.

My honest opinion is that yeah, almost anyone on here will say go with the more powerful card.... but you just don't need it for what you're going to be doing.

Just my 2c though.

Regards.

::EDIT::

Let me add:

Graphics cards don't last so long. They're one of the most sensitive pieces on a machine. My 256mb Radeon just died on me about three days ago.

By the time an OS actually needs more power than a 64mb NVidia card, you will probably need to buy a new one anyway - and that technology will be a lot cheaper by that time.

Any video that can't run nicely on 64mb.... it'd scare me, anyway. too, proc is more important there.

Finally, make sure no matter what card you buy that it's in line with what your system can handle. An 8x AGP card does you bupkiss if your mobo can't do 8x AGP.

My vote swings futher and further in favour of the less powerful card, for you.